patterson



(No Model.) 2 Sheets-Sheet '1.

R. L. PATTERSON. MACHINE FOR DRESSING FLOORS OR THE SURFACE OF LUMBER.

No. 447,160. Patented Feb; 24, 1891'.

ITNSSES. INVENTOH: g w 2% 6 5M By I A TTOHNEYS (No Model.) 2 SheetsSheet 2.

. R. L. PATTERSON.

MACHINE FOR DRESSING FLOORS OR THE SURFAGE OEL UMBER.

No. 447,160. Patented Feb. 24,1891.

ATTORNEYS NITE gems? {PATENT OFFICE.

ROBERT I1.-PATTERSON,OF WELLINGTON, KANSAS, ASSIGNOR on ONE-HALF TO HENRY A. RIEMANN, or SAME PLACE.

MACHINE FOR DRESSING FLOOR S OR THE SURFACE OF LUMBER.

SPECIFICATION forming part of Letters Patent N o. 447,160, dated February 24, 1891.

' Application filed March 18,1896. semi No. 344,343. (No model.)

To all whom, it may concern:

Be it known that 1, ROBERT L. PATTERSON, of WVellington, in the county of Sumner and State of Kansas, have invented anew and Improved Machine for Dressing Floors or the Surface of Lumber, of which the following is a full, clear, and exact description.

My invention relates toa machine for dressf ing floors or the surface of lumber, and has for or with a material, such as sand-paper or emery, as may be required.

The invention consists in the novel construction and combination of the several parts,

as will be hereinafter fully set forth, and pointed out in the claims. v

Referenceis to be had tothe accompanying drawings, forming a part of this specification,

in which similar figures and letters of reference indicate corresponding parts in all the views.

Figure 1 is a front elevation of the machine. Fig. 2 is a'section on line 2 2 of Fig.

1. Fig. 3 is a transverse section through the lumber-clamping device, upon which the machine is adapted to travel. Fig. 4E is a per speotive view of the said lumber-clamping device. Fig. 5 is a bottom plan view of the polishing-head; and Fig. 6 is a central vertical section through the head, illustratin g the application thereto of the polishing-block. Fig. 7 is a side elevation of the kniIe-head adapted for use in connection with the machine, showing the knives of the head 1n s de elevation. Fig. 8 is a similar viewshpw ng the edges of the knives, and Fig. 9 1s a plan view of the knife-head.

The sides 10 of the machine each consists of a skeleton frame comprising two legs a, united by a suitable cross-bar a, near their lower ends, anupper cross-bar a and a crossbar a intermediate of the lower and upper cross-bars. Above the upper cross'bar a an A-frame 11 is formed upon each side piece of the machine, which A-frame virtually constitutes an integral portion of the frame below the upper cross-bar a and usually each entire side frame is cast in one piece.

The right-hand side frame 10 is provided with a downwardly-extending member 12, integral with the inner edge of the front leg between its lower extremity and its junction 5 5 with the lower cross-bar a. The member 12 constitutes, essentially, a third leg, and has journaled therein a wheel 13, preferably provided with a rubber tire 14:. The rear 'legs of the machine and the front legof the left-hand side frame are likewise provided with similar wheels 13, all of which wheels are adapted to travel upon the floor to be polished.

The side frames 10 are connected, preferably, by two cross-bars 15 and 16, which crossbars are secured to the uppercross'bars a of the side frames, and in the upper portion of the A-frames suitable journal-boxes are con" struoted, in which a drive-shaft 17 is held to turn, the said drive-shaft being provided'at 79 one outer end with a crank 18, and upon the shaft between the A-frames a beve'l gear 19 is secured. The gear 19 meshes withfa pinion 20, attached to a spindle 21, held to turn in the bed cross-bar 15,and upon said spindle 7 21, below the pinion 20, a horizontal spur-gear 22 is'attached.

In the front bed cross-bar 16, the hub 23 of a pinion 24: is held to turn, the pinion being adapted to mesh with the spur-gear 22, and the hub of the pinion projects downward below the cross-bar 16, and is provided with a collar 25, held in connection therewith by a set-screw or equivalent fastening device. By means of the said collar the pinion and its hub 23 are held'in proper position.

The pinion, and likewise the hub, is provided with a central bore having a feather formed therein, which feather is adapted to enter a longitudinal groove 26, formed in the 0 1 upper end of a perpendicular shaft 27, which [shaft is passed through the bore of the pinion 10. It may here be remarked that the rear portions of the side frames are usually connected by brace-bars 29, which preferably partral portion, a sleeve 30 is secured, preferably by means of a set-screw, which sleeve is provided with a recess 31 in its upper face, and above the fixed sleeve a second sleeve 32 is loosely mounted upon the shaft, the under face of which is provided with a recess facing with and corresponding to the recess 31 of the lower sleeve, and between the two sleeves a spring 33 is coiled around the shaft,having a seat in the recessed surfaces of the sleeves, as best illustrated in Fig. 9.

From the front edge of the front bed crossbar 16 a post 34 is downwardly projected, upon which post a lever 35 is centrally fulcrumed, provided with a bifurcated outer end adapted to receive the shaft 27 and rest upon the upper surface of the loosely-mounted sleeve To the inner end of the lever 35 a rod 36 is pivotally connected, the upper end of which rod is threaded and projected upward through an aperture in the said front cross-bar 16. The rod is threaded to receive a hand-wheel or thumb-nut 37, whereby when the rod 36 is drawn upward by the manipulation of the thumb-nut 37 the bifurcated end of the lever is made to press the loose sleeve 32 downward against the spring 33, and as the shaft 27 is capable of vertical movement, a proper degree of tension may be exerted upon the shaft, and a suitable cushion formed therefor, to permit of a polishing or knife head, hereinafter described, and which is attached to the lower end of the shaft, shaping itself to the undulating surface of a floor, for instance. The downward movement of the shaft 27 is controlled by a collar 38, adjustably secured thereto, which collar has a hearing against the upper face of the platform, and the upward movementof the shaft is regulated by the upper face of the sleeve-section of the polishing or knife head contacting with the under face of the platform. The polishing-head A is shown in detail in Figs. 5 and 6, and as attached to the shaft in Figs. 1 and 2, and the said head consists of a disklike body 39, having a sleeve-extension 40, integral with its upper central portion, a downwardly-extending marginal flange 41, and lugs 42, integral with its under face, one being preferably placed at each side of a central bore 43, vertically produced in the body and sleeve to receive the lower end of the shaft 27, which lower end of the shaft is threaded, as best shown in Fig. 6.

In connection with the head A a block 44 is employed, having recesses formed in its upper face to receive the lugs 42 of the head, whereby it is prevented from turning upon the head when attached thereto, and the said block is also provided at its center with a conical opening 45, extending through from bottom to top.. The lower threaded end of the shaft 27 extends downward through this opening, and a washer 46 is introduced upon the shaft to a contact with the walls of the opening 45, and is firmlyattached to the head "th rough the medium of a nut 47, screwed upon the extremity of the shaft to an engagement with the washer. It willbe observed that the peripheral surface of the block is flared outward, whereby, when the emery-paper or sand-paper or solid emery or sandstone is secured to the block, which may be done in any approved manner, the corners of the floor or the edges thereof may be readily reached.

The polishing-head is substituted when occasion may demand by a knife-head B. (Illustrated in detail in Figs. 7, 8, and. 9.) The knife-head is somewhat conical in general outline, being provided with a flat under face and a central bore 48, which bore is increased in diameter at the under face of the head, as illustrated in dotted lines at 49 in Fig. 7, and in the opposite sides of the head vertical recesses 50 are Produced, which recesses are made at the periphery, and the upper face of the head in front of one wall of each recess is beveled downward or rendered somewhat spiral, as indicated at 51 in Figs. 7 and 8. The exposed walls of the recesses 50 face in opposite directions, as may be readily observed by reference to Fig. 7, and to the exposed wall of each recess 50 a knife 52 is secured, essentially L-sha-ped, the attachment being made at the vertical member by means of a screw 53 or its equivalent, and the horizontal member, the edge of which constitutes the cutting-edge of the knife, is carried below the under face of the head. ting-edges of the knives also face in opposite directions, one following substantially in the track of the other when the head is revolved. It will also be noticed that the knives areso set in their recesses as to'extend slightly beyond the periphery of the head. This is done to accomplish the same purpose sought to be obtained bybeveling the block of the polishing-head.

lVhen a floor is to be trued up, for instance, or the inequalities removed, the knife-head is placed upon the shaft and is revolved as the machine is advanced by means of the crank 18 and the gear-connection between the drive-shaft and the perpendicular shaft 27. hen the floor is to be polished only, or the inequalities are very slight, the polishing-head containingthe emery or sand paper is substituted for the knife-head.

In order that the machine may be used to true the faces or edges of boards, slats, or any kind of lumber, the machine is provided upon the inner face of each leg of the lefthand side frame with a grooved wheel 54, the said grooved wheel being so journaled that it will not contact with the floor when the de- Thus the cutfor the reception of rods 58, which pass through both side bars and are adapted to support the lumber 59 to be dressed, and also act as a guide. The lumber to be dressed is supported upon the rods 58, and the surface to be removed is that above the plane of the upper face of the side bar next to which the lumber is clamped by suitable clamp-rods 60,

provided with a thread to be screwed into the side bar of the frame containing the track, and provided at their outer ends with a crank-arm 61, whereby they may be readily manipulated. The operation of these clamprods is clearly shown in Figs. 3 and 4:.

To dress the lumber, the machine is placed upon the frame, the grooved wheels 54 made to travel upon the track 56, and the cushioned wheels upon the upper surface of said side bars. The operation of the machine in this connection is clearly set forth in Fig. 3, and needs no further description.

Instead of journaling the grooved wheels 54 to the inner side of the legs, as shown, the.

journals therefor may be dispensed with and said grooved wheels be substituted for several of the roller-wheels 13.

Having thus described my invention, I claim as new and desire to secure by Letters Patentl. The combination, with the wheeled frame having a vertical shaft provided at its lower end with a dressing-head, of aclamping-frame having a longitudinal track or way on its upper side, on which the said frame travels to bring the said head along the material to be dressed.

2. In a machineof the character described, the oblong frame D, having series of apertures 57 in its opposite sides, rods 58 adjustable in said apertures according to the width of the boards to be dressed, and trans- 5o verse screws projecting through one side of the frame to clamp the boards resting on said rods against the inner face of the opposite side of the frame, substantially as set forth.

3. In a machine of the character described, the dressing-head B, having a flat lower face, oppositelyfacing vertical shoulder-forming recesses 50 in the edge or peripheryof the head, the upper face of the head in front of each recess being beveled downward, as shown at 51, and angle-knives 52, the vertical members of which are secured to said vertical shoulders, as at 53, and the horizontal members projecting forwardly under the lower face of the head, substantially as set forth.

4:. In a machine of the character described, the combination, with a frame, a drive-shaft jonrnaled in said frame, a spur-gear provided with an attached hub, and a feather in the bore of said hub and wheel, and abindingcollar attached to the hub, of a perpendicnlar shaft havinga longitudinal groove in its upper portion and adapted to receive the feather of the spur-gear and its hub, a spring tension device attached to the shaft, a lever f ulcrumed upon the frame and having a bearing upon said device, a cutting-head secured to the lower end of the shaft, and a connection, substantially as shown and described, between the hub spur-gear and the driveshaft, as and for the purpose specified.

5. Theoombination, with a'machine provided with a rotary spring-pressed shaft, a cutting-head secured to the. said shaft and having rollers journaled in the legs at one side of the machine and grooved wheels jour naled in the legs upon the other side of the machine, of a frame-provided with a track adapted to receive the grooved wheels, supporting gage-rods detachably secured in said frame, and threaded clamping-rods passed through one side bar of the frame, substantially as and for the purpose specified.

ROBERT L. PATTERSON. Witnesses:

J OHN P. J ONES, H. A. RIEMANN. 

